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12x+7-2x+5=0
We simplify the equation to the form, which is simple to understand
12x+7-2x+5=0
We move all terms containing x to the left and all other terms to the right.
+12x-2x=0-7-5
We simplify left and right side of the equation.
+10x=-12
We divide both sides of the equation by 10 to get x.
x=-1.2
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